Husking rolls



Dec. 31, 1946. J. L. AASLAND HUSKING ROLLS Filed Dec. 18, 1943 I fit/672.2 07

\ja/n Qasland "snapping means.

Patented Dec. 31, 1946 "UNITED STATES OFF-ICE 'HUSKING ROLLS ;;J.ohn L. Aasland, Moline,Ill.,-assignor t International Harvester New Jersey Company, a corporation of Application December 18, 1943,";Se'rial No. 514,739

3 Claims.

V This invention relates to husking rolls. -More specifically, it relates to a husking roll construction for corn pickers.

pickers utilize a pair of Conventional corn snapping rolls driven in opposite directions as'the husksare quite thin andsome construction must-be rovided to grasp the thin husks and pull them from the ears. There are times, however, when piecesofstalks are attached to the husks, and provision must be-made to take these through the husking rolls or they will be pulled offand delivered with the husked ears of corn.

The object of the invention is toprovidea husking device of the roll type in which the rolls normally contact each other, being urgedto gether by resilient means, but which may be separated by husks and larger pieces of material passing therebetween.

A more specific object is to provide a husking roll resi iently held in a concentric position on a driven shaft.

Other objects relating to the specific construction will be apparent from the detailed description to follow.

In the drawing:

Figure 1 is a plan view showing a set of combined snapping and husking rolls embodying the invention and such portions of a frame structure as are necessary to show the location of rolls in a machine;

Figure 2 is a section taken through the centers of the husking-roll driving shafts;

Figure 3 is a section taken on Figure 2.

As snapping and husking rolls are very well known in the art, and their location in a corn picker is well understood, only a portion of a picker frame has been illustrated in the drawing. The portion of the frame illustrated consists of longitudinally extending angle bars l0 and H.

the line 3-3 of These bars wi l be mounted at an angle in the conventional picker. A pair of bearing brackets i2 and I3 are bolted to the angle bars l0 and H, respectively, to provide means for supporting the snapping and husking roll structure.

As the two rolls are of different construction,

a thick rubber covering I6. ing provides means for gripping the husks on the ears of corn and starting them through between i4 between the'bracket meshes with a-driving gear sprocketZ I' by means of which --mitted to the rolls.

7 "The shaft-'29 is carried by the bearing bracket -i'l*and"by-"a second bearing bracket 22. Said bracket is adjustably secured to the angle bar 10 of the frame, adjustment they will be individually described. A roll supporting a --drive shaft l4 carried at one end'by the bearing bracket l3' provides-means for mounting a tubular husking 'roll- I5 which is provided with Said rubber covertherollers. The shaft Mextends through a bearingbracket !5 which is secured to the anglejbar ll of the frame. Beyond said bracket alive end snapping roll ltis mounted on the shaft I4. A snapping roll structure I1 is mounted on the shaft and the end 'of'the A driving gear I8 mounted on the-shaft "l4 19 mounted on a second shaft zfi. TheshaftlB-also carries a chain power is transwith respect .to said frame'b'eing provided-by a slot 23-in the bracket.

- 'Thisadjustment provides for movmg one end of the shaft 25 with-respectto the shaft l4, thereby separating-thesnapping portions of the rolls. The live end-snapping roll 24 is carried on the end of the shaft ZGbeyor'id-the*bracket -22. *As previously stated, rolls of this type are usually inclined downwardly with the live end rolls at the lower end. A snapping r011 structure 25 is mounted on the shaft 20 adjacent the bearing bracket 22. Said structure is provided with a reduced end portion 26 which provides means for attaching one end of a coil spring 21. The other end of said spring is secured to a member 21 which is carried within and rigidly secured to a tubular husking roll 29. Said husking roll is normally mounted concentric with the shaft 20, being resiliently retained in concentric position by means of the spring 21 and a similar spring 28, as shown by the broken-away section of Figure 1, at the other end of the roll. There is sufficient space, however, between the inside of the spring and the shaft 26 and the outside of the spring and the inside of the tubular roll 29 to permit a substantial deflection of the roll 29 out of concentric relationship with respect to the shaft 25.

In Figure 1 it will be noted that the bracket 22 is in a position of adjustment at the extreme end of the slot 23 whereby the husking-roll structures I1 and 25 are brought into contact with one another. In this position of adjustment, the roll 29 is moved against the rubber-covered roll 15 with sufficient force to deflect the rubber covering 16 to a certain degree and at the same time to push the roll 25 into an eccentric position with respect to the shaft 20. This deflection is illustrated in Figure 2. In otherpositions of adjustment of the bracket 22 there will not be as much pressure against the roll 29 and there may be no deflection out of the concentric position when no material is passing between the rolls. In

Figure 3 an illustration has been given as to what happens when a large piece of material, such as a portion of a stalk, passes between the husking rolls. The rubber covering is deflected a substantial amount and the roll 21 is moved into an eccentric position until its center is moved from C to C. This is the extreme position as the roll 29 then abuts the coils of the spring, blocking any further movement. As soon as the material or object which caused the separationpasses through the rolls, the roll 29 returns to its abutting position against the rubber covering IS, The provision of springs at both ends of the rolls gives a degree of flexibility which is Very significant as a large piece of material may be passing through the rolls at one end while at the other end the rolls are suificiently close together to grip and remove paperlike husks. This is particularly true due to the deflection of the rubber covering by pressure of the resiliently mounted roll 29.

The construction as above described also permits the use of constant mesh gears for the driving shafts which are not moved apart when there is relative movement between the rolls. The adjustment of bracket 22 angles the gears I8 slightly with respect to each other, but these gears are of the loose-fitting, agricultural type which operate satisfactorily with small angular changes in their axes. Another outstanding advantage of the construction of this invention is that the snapping rolls are not moved apart by movement of the husking rolls carried on the same shafts. This permits a simplified combined snappingroll and husking-roll construction with th required spacing of the snapping rolls and the yieldable mounting of the husking rolls.

It is to be understood that applicant claims as his invention all modifications falling within the scope of the appended claims.

What is claimed is:

1. A husking roll construction comprising a pair of parallel driven shafts, a husking roll carried by one of said shafts, a tubular husking roll positioned around the other shaft spaced therefrom, generally cylindrical coiled springs concentrically positioned around the shaft and between the shaft and the tubular roll, and means for securing each spring to the roll at one of its ends and to the shaft at its other end,

2. A husking roll construction comprising a pair of spaced parallel shafts, a roll securing member at the ends of each shaft, a tubular husking roll rigidly secured to the members on one shaft, a second tubular husking roll positioned around the second shaft, said second roll being provided with spring-securing members spaced axially from th ends thereof, the roll securing members on said shaft being provided with extensions in the an-- nular space between the roll and the shaft, and a generally cylindrical coiled spring having a plurality of coils of substantially the same diameter at each end of said husking roll surrounding the shaft, each spring being secured to the springsecuring member at that end and to the rollsecuring member at the corresponding end.

3. A husking roll construction comprising a pair of spaced parallel shafts, said shafts being provided with means for driving them in opposite angular direction, roll-securing members at the ends of each shaft, a tubular husking roll rigidly secured to the members on one shaft, said roll being covered with rubber, a second tubular husking roll positioned around the second shaft, said roll being provided with spring-securing members spaced from the ends thereof, the roll-securing members on said shaft being provided with extensions in the annular space between the roll and the shaft, and a generally cylindrical coiled spring having a plurality of coils of substantially the same diameter at each end of said husking roll surrounding the shaft, each spring being secured to the spring-securing member at that end and to the roll-securing member at the corresponding end.

JOHN L. AASLAND. 

